Doorcheck



Jan. 14, 1930. 7 D. L. MOORE 1,74

DOORCHEGK Filed April 15. 1927 2 Sheets-Sheet 1 Jan. 14, -1930. .p. 1.. MOORE 3,

DOORCHECK Filed April 15. .1927 2 Sheets-Sheet 2 tion.

Patented Jan. 14, 1930 PATENT, oFFIcE DAVIS L. MOORE, OF ATLANTIC CITY, NEW JERSEY noononncx I Application filed April 15,

The object of this invention is to devise a novel and simplified construction of a door check which will retard the closing movement of the door and permit it to close gently.

With the above and other objects in view as will more clearly hereinafter appear, my invention comprehends a novel door-check consisting of links forming a dead center stop when the door is nearly closed, and provided with means to permit the'movement of the door in its closing direction after the door has been stopped.

It further comprehends a novel construc- 5 tion and arrangement of a door check wherein the door and door frame are connected by links, which, when the door has closed to, a predetermined position, cooperate with a novel construction and arrangement of a door check, which will stop the door before it completely closes, and which will permit the closing movement of the door.

Other novel features of construction and advantage will more clearly appear in the detailed. description andappended claims.

For the purpose of illustrating the invention, I have shown in the accompanying drawings a typical-embodiment of it, which,

. in practice, will, give satisfactory and reli- 3o able results. It is howevento be understood that the various instrumentalities of which my invention consist can be variously arranged and organized and my invention is not limited to the exact arrangement and organization of these instrumentalities, as

herein set forth.

Figure 1 is a rear elevation of a portion of a door and its frame, in conjunction with which a door check embodying my invention is employed,the door being in its almost opened position.

Figure 2 is a view similar toFigure 1 but showing the door in its almost closed posi- Figure 3 is a view similar to Figures land 2, but showing the door in its closed position and the parts of the door check inthe positions they assume when the door is fully closed. v

Figure 4 is a top plan view of the con- 1927. Serial No. 183,931.

struction with the door in its opened position.

Figure 5 is a top plan View of the construction with the door in its closed position.

Figure 6 is a top plan view, on an enlarged scale, of a portion of the door check.

Figure 7 is a section on line 77 of Figure 4.

Figure 8 is a bottom plan View of a shoe and a portion of a link attached thereto.

Figure 9 is a front elevation of a support-v ing bracket.

Similar numerals of reference indicate cor: responding parts.

Referring to the drawings:

1 designates a door frame in which is mounted by means of the spring hinges 2, a door 3. The door frame has secured to it a bracket 4 to which is pivoted a link 8 pivoted at 7 to a link 5, which is pivoted at 9 to a bracket 10, fixed in any desired man ner to the door 3.

The links 5 and 8 have a tendency to cause the door to close due to the provision of a spring 11, or the door may be provided with spring hinges to render it self closing. The bracket 10 is provided with a slot 12 which receives a slide or shoe 13 which is provided with an upwardly extending pin 14 which is in the path of the link 5 or a projection therefrom. The slide 13'is provided with a key 15 which is adapted to contact with a pin 16 in the slot 12, to limit the extent of forward movement ,of the shoe or slide 13.

The slide 13 has pivotally connected to it at 17 oneend of a link 18. The link 18 has pivoted to it at its free end near its lower corner, a link 19 which is provided with a shoulder 20 so that the link 19 can only open in one direction, and this link is normally maintained in alignment with the link 18 by means of a spring 21 connected to the links 18 and 19 respectively.

The link 19 has pivotally connected at 22 to its free end, alink 23 on which a weight 24 is longitudinally adjustable, and this weight 24 can be fixed in its adjusted position by means of a fastening device 25.

The link 23is provided with an end stop member 26 which passes through it and is adapted to contact with the end 27 of. the link 19. The link 23 is also provided with a stop member 28 which passes through it and is adapted to contact with the side of the link 19 so that the link 23 has limited movement in opposite directions. A spring 29 has one end fixed to the link 18 and passes under the stop 28 and over the stop 26 so that the tendency of this spring 29 is to maintain the stop 28 against a side of the link 19. The bracket 10, see Figure v1, is provided with a stop 30 which limits the movement of the link 31 which is pivoted at 32 to the bracket and which is pivoted atw22 to the links 19 and 23.

The operation of my novel door check will now be apparent to those skilled in the art to which this invention appertains, and is as follows:

Referring first to the embodiment seen in Figure 1, the door check is shown in the pos'ition it assumes when the door is partly opened. Assuming now that the door is closing, due to the action of the spring 11, it will be seen that the link 5 will contact with the pin l and move the shoe 13 forwardly. This forward movement of the shoe will bring the parts into such position that the links 18 and 19 are substantially straight and in substantial alignment with the link 31. This will check the closing movement of the door.

A further closing of the door, due to the action of the spring 11, will cause the slide or shoe 13 to move forwardly until it en'- gages a stop 16, and this movement is resisted by the action of the springs 21 and 29 so. that when the door is fully closed the parts appear as seen in Figure 3, and as soon as the door is opened the parts of the door check move rearwardly into the position seen in Figure 1.

The relative movement of the links 18 and-19 on the complete closing movement of the door is facilitated by the weight 24. This weight 24: contributes to effect the closing movement of the door.

It will be apparent from the foregoing that I have, devised a novel door check operatively connected with the door and the frame of the door so that the door will be quickly andfquietly closed, and the door check is constructed in such a manner that it will not get out of adjustment.

The door is brought to a noiseless stop an inch or so before closing andthe door check then permits the door to close to its fully closed position. In the position shown in Figure 1, the joint formed by the links will not buckle because there isno back resistance. As it approaches the position seen in Figure 2, there will be a certain amount of back resistance but the inertia of the weight 24, keeps the joint from buckling until the door is stopped.

When the joint buckles, or in other words when the link 19 moves into its opened position out of alignment with the link 18, the motion of the weight reverses to facilitate the opening movement of the link 19, or in other words, its movement out of substantial alignment with the link 18.

It will be seen that the door check consists of aplurality of links which are movable to a dead center stop, and I provide means to permit a further movement of the door in its closing direction after the door has been momentarily stopped, so that the door is fully closed without any shock or jar, and causes a'movement in a reverse direction of one of the links.

It will now be apparent that I have devised a new and useful door check which embodies the features of advantage enumerated as desirable in the statement of the invention and the above description, and while I have, in the present instance, shown and described preferred embodiments thereof which will give in practice satisfactory and reliable results, it is to be understood that these embodiments are susceptible of modification in various particulars without departing from the spirit or scope of the invention or sacrificing any of its advantages.

Having thus described my invention what I claim as new and desire to secure by Letters Patent, is

1. The combination with a door, its frame and spring actuated means to cause the closing of the door, of pivotally connected and relatively movable links actuated by said means to bring said links to a dead center stop to check the closing movement of the door, and a weight operatively connected with'one of, said links to cause relative movement of them to permit the final closing movement of said door.

' 2. The combination with a door, its frame and a spring actuated means to cause the closing of the door, of pivotally connected and relatively movable links actuated by said means to bring said links to a dead center stop,'to check the closing movement of the door, a spring ltending to move said links into substantial alignment, and a weightoperatively connected with one of said links to cause relative movement of them to permit the final closing movement of said door. i

3. A door check comprising a bracket, a shoe slidable in said bracket and adapted to be moved by the closing movement of the door, linksconsisting of pivoted sections one of which is pivoted'to said shoe, a second link pivoted to said bracket and to the other of said link sections, a spring tending to move said link sections towards each other,

7 and a weight movably carried at the ends of said links, to efiect the reversal of one of them before the door fully closes.

4. A door check comprising a bracket, a shoe slidable in said bracket and adapted to be moved by the closing movement of the door, a link consisting of pivoted sections one of which is pivoted to said shoe, a second link pivoted to said bracket and to the other of said link sections, a spring tending to move said link sections towards each other, a third link pivotally connected to said links, and a weight adjustably mounted on said third link.

5. A door check comprising a bracket, a

. shoe slidable in said bracket, and adapted to be moved by the closing movement of the door, a link consisting of pivoted sections one of which is pivoted to said shoe, a second link pivoted to said bracket and to the other of said link sections, a spring tending to move said link sections towards each other, a third link pivotally connected to said links, stops to limit relative movement of said third link relatively to the other links, and a weight carried by said third link.

DAVIS L. MOORE. 

